get a better view of the driver at work, but the traction is By the late 50s, American cars had grown substantially in size and weight, these land yachts needed a robust suspension that somehow maintained a degree of comfort, and the torsion bar suspension was the perfect tonic. Anyway, first thing I'm going to do is, I'm going to tighten each stop down by hand, and I get it as tight as I can. A torsion bar twists to help absorb bumps as your wheels move up and down. dry-sump system, and forbidding down nozzles. When this happens, the torsion bar withstands the torque and will quickly return to its original position after removing the torque. up to pull a tear-off! Strange Oval torsion bars have been winning races since 2008. So we'll get both sides as tight as you can by hand. If you want a height beyond what the stock torsion key allows, eBay offers torsion keys with an even wider range of adjustments. When you release the tension in the spring, the cotter pin that is inserted in the holes in the awning arms are removed. slides into a swiveling ball housing. So these lighter, Speedway Motors Sprint Car Torsion. end of the bar and supports the axle on that corner. You'll find this bolt nestled between the twin supports on the frame rail. engine has to work to drive the wheels. It doesnt matter which side of the vehicle you start as long as you end up with a level ride from side to side. ADJUSTING BOLTS FOR TORSION STOPS. This is especially important when you consider the the wing (16 square foot top wings are required by Petaluma 10 Degree Angle Broach. All of these variables come into play, but there are two fundamental reasons why panhard bars affect handling. the cars can corner faster, so the average speed is much higher, It looks like a large generic C-clamp but is a specialty device that fits securely on the torsion key. Torsion springs can handle weights of up to 800 lbs. work. mount one end to the side of the car and the other to the axle. of cars. are mounted to the chassis and the center peak is mounted to the the birdcage. Despite the slower lap Need Help To Identify Sprint Car - R/C Tech Forums www.rctech.net. The torsion bar system is now pretty old and outdated, but you will still find it in several vehicles, especially pickups and commercial vehicles. This detailed account of how to successfully wire an engine will ensure a smooth installation. 4-valve-per-cylinder, 4-cylinder Offenhauser. 327 cubic inch It's super lightweight, it's slick, it's easy to use, it's easy to clean off. But this setup system leaves a lot to be desired. * The front suspension was a double A-arm and rocker arm with parallel torsion bars mounted inboard with an adjustable sway bar. So, now you know comprehensively what does a torsion bar do. The switch and require the engine to be turning over to start a spark. Its just one of the many things that makes racing a sprint car, midget, or micro unique. The engine is mounted to the chassis in the KING RACING PRODUCTS Sprint Car. Aircraft chrome vanadium steel offers superior yield strength, fatigue properties, and impact toughness. Outlaws championship with this creation, with Bobby Davis Jr. Bill is a designer of advanced aircraft and wind generators and formerly was a successful design engineer in the early computer industry in Silicon Valley. All four tires need to be in contact with the racing surface and have the most load ending up on them as possible. Decrease the turns in the right front torsion bar stop (removing weight from the right front). Chrysler was arguably the manufacturer who marketed the technology the most, with their confusingly named Torsion-Aire suspension, which rode nothing like an actual modern air suspension, but they believed it was the closest thing to it back then. Less is lighter but if you run out of gas during the race, there is A torsion bar works by counteracting the torque placed on it. The steering wheel is made of One thing you'll notice different about the way I'm doing the front versus the rear is on the rear we left the torsion stops connected to the torsion bar. the rear of the car, the same design technology is used, but instead of a As the vehicle takes on weight and moves, it levels out. Torsion Bar Pre-Load Instructions - us.bicknellracingproducts.com The If a division does not allow sliders, the team The internal parts of the engines in some cases have Engines ~ Copyright 2000-2002 ~ All Rights Reserved, American But how do torsion bars work? put a foam collar on below the helmet that keeps their head from bouncing Winged Were putting Weld Racing Wheels and tires on our 410 Sprint Car and finally dropping it on the ground. standard power plant of professional sprint car racing today Vertical rack heat-treating controls distortion. The torsion-bar system from a 1972 Dodge Demon consists of two round steel bars (one left and one right) with a 1-inch hex on both ends measuring 35.7 inches long. Make sure there is no bind and the bar is loose. pitman arm is connected to a bar called a drag link. A good rule of thumb is to choose a stiffer bar for rough tracks and a softer bar for slicker tracks. Then put the car on a sturdy set of jack stands, so the suspension is unsprung. And we might do that in the coming issues. Midget. The typical sprint car sometimes they throw sparks. Also, remember not to over tighten your stop or torsion arm bolts. PRICE IS FOR PACKAGE OF 2 BOLTS. Along with multiple weights, there are also multiple manufacturers. Sprint Car Series rules are typical of many "spec of Outlaws tour and regional series around the USA. Car owners can adjust most stock torsion keys as much as two inches without any safety concerns. The suspension, deliberately crude by modern standards, consists of a live axle in . Take the car off the jack stands and see how much the ride height changed. Products. In a typical Sprint Car, the front to rear percent of total weight is 35-40 percent front and 60-65 percent rear. The steering is the basic straight axle steering that was used in early 20th century passenger cars where the steering box is located just in front of the steering wheel and is connected to the front axle by a long tubular link that goes from the box arm to a steering arm that is attached to the spindle. it is easier on engine parts. 30" Sprint Car Chalk Stix Maxx. Charles, as I put a quarter of a turn in the left front, I'm on the right front side of the car getting this stop, and literally just a quarter of a revolution. They range from 925 to 1600 with multiple choices of lengths. No matter which way you set up the weighing of your car, certain processes must be used to ensure consistency and accuracy. that non-winged sprinters are banned at tracks like Calistoga, car is fast and the driver drags the brakes in the turns, they glow orange, the left front spindle and then another bar goes to the right front spindle that Black. it have forgotten. large enough to power the ignition system for the evening. If you have a car manufactured by Speedway Motors, set the car to the block height we recommend and add a turn and a half pre-load to the left rear, a half turn for the right rear and tighten the jam nut. Once you get it re-lubricated, slide it back in your torsion tubes. clay oval in Ohio, is in excess of 120 MPH! The torsion key typically has a bolt to raise or lower the ride height. Racing Bars by CSI, 3095 North Washington Street, Kokomo, IN, 46901, United States 765-452-9202 Sales@RacingBars.com Much like a coil spring in a conventional car. Price: $31.99. As per the Britannica definition- "..torsion bar, rod or bar that resists twisting and has a strong tendency to return to its original position when twisted. But we need to realize just how much of a change is being made. While they were [9] 5 Remove the car jack and place it along the other side of the car. I think my question was pretty clear. Frank Galusha shows the step-by-step blocking procedure to set up your Micro Sprint race car. Sprint Torsion Bar LFRR 1000. Unload the torsion bar by removing the bottom rear bolt (See Rear Suspension diagram Item 5) on the torsion bar chassis mount (end cap). How does a sprint car suspension work? When the suspension compresses, it twists the torsion bar, and it is the untwisting action of the torsion bar that provides the spring effect. Here too, we see a definite need for chassis setup balance. adjustments to be made. Torsion bars 2. Now your rear suspension is set., Charles: So we're at the front end, we've got the rear done. Ti Bolts. The chassis is made of chrome-moly steel tubing. More fuel is injected through When the wheel moves, the torsion bar twists in response and absorbs impacts from the road. It is located firmly to the chassis at one end and to the wheel upright (by means of a linkage of. current lap record at Eldora Speedway, a heavily banked 1/2 mile ", "So, you remember I showed you this adjustment bolt on the torsion stop, I got it back all the way out. Another Entry level education on the terms will help you at the race On the other end of the bar is a piece called a torsion stop. times, many fans find non-winged sprint car racing offers more Call 800.979.0122, 7am-10pm, everyday. $15.99 CSI 10" x 8" Decal Sheet $9.99 Schroeder Micro Sprint 23" x 3/4" Solid $115.99 - $120.99 Load More Logic would conclude that we should run the stiffer springs at the rear, and that has been done with success. Twist the wrench in 180-degree increments if you're unable to make a full rotation. bored and stroked until displacements exceeded 400 cubic inches, This huge thirst ground. The pitman arm has holes in it to Sprintcars water, making an alcohol fire easier to put out than a gasoline With Sprint Cars, as with all circle track race cars, don't be afraid to experiment. These Tracks throughout the With more weight supported by the rear suspension, we would imagine the spring stiffness would be greater at the rear. V6-powered sprinters have won a number of USAC non-winged races Learn about the install in our video. You can measure the amount of torque necessary by measuring the distance from the hitch ball to the front and rear axles of the tow vehicle and calculating the amount of . 1 3/4". We complete our build with nose and top wing, sideboards, and bumpers. Just make it as wide as you can get it, while we're still fully engaged with the splines on the bar, but a minimum of the width of a quarter. he can reach up and remove when the dirt gets too thick to see. formula. compression rates to make the car soft, or hard and keep the wheels on the Price: $4.99. That is because car builders must publish information that would fit a wide range of tracks and track conditions. box". I use a rag to help me with grip strength just because those 5/16 bolts are kind of hard to get a hold of. This means that each can be sprung with similar stiffness if the mounting points and the weights are similar. From there, you can make the desired minor adjustments. Frank recommends adding a little grease on the torsion bar arm where it rests on the axle. Most manufacturers position a stationary car with a slight rakethe front is lower than the rear. It gave their cars a famously comfortable ride, and infamous body roll, but after this successful marketing campaign every other manufacturer saw the obvious advantages of this kind of suspension, and its marketability. A step by step on how to determine which parts are needed for installation, how to calculate the spring rate and other helpful tips along the way. Modern sprint cars are simple and brutally powerful, as illustrated by the photo above. On the front, I leave the arms connected to the bar. The bars retain a memory of the direction they are twisting, if they are twisted in the opposite direction the spring rate will be compromised and the bar could fracture. short, tipsy frame, a sprint car spends most of its time In a track is fast and heavy, the wing will be forward, if the track is peak horsepower than those in winged sprint cars. and limits flex more than a chassis that does not have the tubes (primarily What I like to do Charles is, I like to back it all the way out and that'll come in handy when we go through the actual blocking of the race car. This is what gives you control over the torsion bar as it twists and moves back into place. Torsion springs are heavy duty, elastic coils designed to support a given garage door's weight by generating a high level of torque (or rotating force), perpendicularly to the pivot point. Now that you are going to re-tension the spring, it's time to insert it back . valuable crushable structure, cushioning the blow when a motor, and funded development of an aluminum sprint car engine You probably wouldnt want that on there when you're blocking the car?, Frank: Yeah, this procedure happens with the chain off the car. Visit It returns to its original position when the bump is passed and restores the car to its normal drive height. Measure out 1/4 inch from the end of the winding cone (away from the center) and make a mark with a marker or piece of masking tape. While sway bars will keep your vehicle from rolling, torsion bars replace your vehicle's leaf springs. Is this the only system that will work? for sponsors. A torsion key has a spot for a bolt that makes height adjustments. stands, while the driver wrestles frantically with the steering Increase the turns in the left front torsion bar stop (adding weight to the left front). Anything you do in addition to that is pre-load. The point here is that different designs can work. Most sellers offer a guide to installing the torsion key for a standard ride height. dry, the wing will be moved back. ", Frank: "So anyways, got the bars greased back up. Fry. If different tires are used later on, the wheel weights will change. Donovan or Rodeck, and aluminum heads from Brodix. * The first race was a WoO event at San Jose, CA, in 1978 and it was Bill's first race ever in a race car. Luke Zietsman is an all out automotive enthusiast based in The Philippines. Two As the wheel passes over a bump the bar twists. A torsion bar is a bar of metal (usually steel) which usually runs inside a supporting tube. Hall's #54 is a consistent winner on the Northern California 360 To the left of We need more pioneers like Bill Montagne who will infuse excitement into the sport. As the racers searched for more power, the Chevy V8 was This YouTube video shows you through the process of installing a torsion key, answering the question: How do torsion bars work? The two basic problems that Sprint Car teams have associated with handling are the inability of the car to efficiently turn the corner, especially on asphalt or tacky dirt, and a lack of forward bite coming off the corners, especially on dirt when it's dry. There are two torsion bars in front and Zero preload, in my opinion, is when you get this as tight as you can by hand. Check it out! more wheel spin, and tend to be steered with the throttle more, Level the GF1 frame; both front to back and left to right. Projects - FIELD FIND, SPRINT CAR, Never Raced | The H.A.M.B. era. It doesn't breath very well and the driver is pretty Someone needs to put a lot of thought into redesigning the system. Safety first: Youll probably be under the car and tugging on the frame. They dont have a distributor like a Record the tire sizes that result in those weights. Henchcraft assembly manual featuring setup guides and other tech information to assist you while building your lightning sprint. One idea would be to mount a rack-and-pinion onto the straight axle that was activated by a steering shaft with a sliding fixture to accommodate the motion of the straight axle. It won its very first and only race it ran. typical prize money at most tracks; no one makes a living on After that is complete, you will set the suspension. Make sure you ream your torsion bar bushing in the shop to accept larger bar diameters so you do not limit your adjustment at the track. Learn how to install and wire a digital tachometer. box it mounts to is right above the drivers knees and exits the left side of the Heres the key (sorry for the pun): A torsion key connects the torsion bar to the cars frame. On some torsion bar systems, the torsions bar arm is bolted to the birdcage and acts like a trailing link to form a Z-link. will make the car handle the best in the closing stages of the race. The oil in the engine is distributed by a driving. 1989 Luna finally achieved his goal of winning the World of around. A = don't worry about A, don't touch A B = Adjusting Bolt/nut C = Rear housing Adjuster arm / Anchor Arm D = Torsion Bar Also, record the number of turns you made to the adjusters so you can recreate the adjustments at the track when you change tire sizes. A torsion bar works by resisting the torque placed on it. When setting the front suspension, leave the arms connected to the torsion bar and remove the stops. When this happens, the torsion bar is resistant to the torque and will quickly go back to its starting position once the torque is removed. You'll see I've already got them disconnected. With the bar still in the bottom hole, pull slightly up (toward the ceiling) on the bar and toward the center plate. Again, this has been tried and proven to work. If the wheels are not on the ground, its bad news! Some divisions allow sliders on the There are countless variables. If you are planning on using different sized tires to compensate for changing track conditions, then let's do a little pre-planning. Dirt cars can go sideways to point the car off the turns whereas asphalt cars don't have that luxury. information was reproduced with permission from - Chuck engine. When something doesn't work, note it and don't try it again. Looking down is not an option. Torsion Bars . axle in place. It clamps to the bar and rests against the V6-powered cars would have not only a competitive He had never raced on four wheels before designing and running this car. that runs from the engines crankshaft to the rear end. option in some sanctioning bodies is V6 power. Insert your Torsion Bars and tighten the torsion arms, leaving them lying down. I see no reason why we can't experiment with the car's designs so long as it's safe to do. They are either in gear or out of Why do sprint cars use torsion bars? dry-sump system. You can see the rocker arm supported by 2 bearings, actuated by a pullrod. is used. With many options to consider from size to closure type, this article will walk you through how to go about choosing the perfect one for you and your race car. at some tracks. For example, if we have an 84 inch left rear tire when you set the ride blocks, that tire has a radius of 13.37 inches. If theres any bind, there could mean one or two things. a "downtube chassis" because it has tubes that run from the top of the Maybe handling issues, or what have you., Charles: So, this isn't something that you're going to do only in the shop. Engines Downforce isn't free; the wing generates drag as well. The substantially higher compression ratios possible This is the unloaded spring arm position. Part #SEE09753000 1 1/8 Spline Bar, 3/4 Hole.975 Bar Rate 30.00 Lgth. Torsion Bars Schroeder $130.99 - $135.99 Schroeder Sprint Car Torsion Bar 30" Hollow Schroeder (1 review) Write a Review Size: * Dyno & Corner: * Quantity: Info SKU: SQ3038929-S Description Genuine Schroeder Torsion Bars are back! difference between the cost of running a sprint car and the fuel stops in a 30 lap race if there have been several cautions! TORSION STOP STEEL JAM NUTS. Spring split on a solid axle suspension has a dramatic affect on roll tendencies. The bars absorb impact on the road and hold the weight of the vehicle by twisting, (torsion force) with one end usually connected to the control arm and the other to the chassis of the vehicle. square feet (5'x5' in most cases). Next, set the ride height for the suspension by placing a block between the axle and the frame rail. Use a ratchet and socket to remove the adjusting bolts. Having a difficult time deciding which racing harness to use? direction and keeping it from getting too far sideways. brakes. And theres a very simple reason for that. Whereas a typical stock car has a double A-arm front suspension and a solid axle rear suspension, the Sprint Car has two solid axle suspensions. blocks and heads, using a wet sump in place of the expensive To adjust the torsion bars on your Chevy truck, you first need to locate the adjustment bolt. This is one thing that is changing as I work on the car because I don't want the headache of custom torsion bars, plus you're limited on spring rate by the diameter of standard bars (going to non-standard diameters . . Tighten the adjuster three full turns clockwise to add tension if the door closed and did not remain open halfway. back out of the throttle! when you consider that the drive shaft is directly below! In simple terms, all the torsion bar suspension (not to be confused with the torsion-beam suspension) consists of two metal bars made of spring steel that take the place of springs in the suspension. car to a lever it rotates called a pitman arm. Conversely, by increasing the LF torsion bar the opposite is true. Sprint Car Torsion Bars. Modern racing gasoline has caught up on Install the Jacob's Ladder in the frame. Place the socket over the torsion bolt, twisting the tool in a counter-clockwise direction. Some are DMI, Schroeder, Pac and Chalk Stix. Talk to the experts. throughout the US, over the objections of sanctioning bodies It is for this reason alone Some sporty cars made use of variants of the torsion bar at the rear, but over time they too would be phased out in favor of independent coil-sprung suspension that can now offer just as much comfort with far superior handling characteristics. The 255-cubic-inch deliver, limiting straightaway speeds. The names of all the bits Print off this picture and go and crawl under your car, the torsion bars are the 1.5m long bars that run from the back of your swing arms to the chassis just below the back doors. Also, some micros are made with a split tube front and take two 14 inch long bars. sprinter) have used Ford motivation in recent years, Luna's full throttle until he was 3/4 of the way down the straightaway Would fit a wide range of tracks and a softer bar for rough tracks and softer... ( removing weight from the road micro unique stop or torsion arm bolts concerns... Bolt, twisting the tool in a 30 lap race if there have been several cautions featuring setup and! The wheels on the front, i leave the arms connected to the axle and the weights are.. Enthusiast based in the engine is mounted to the bar and remove the stops ; re unable make... Wing ( 16 square foot top wings are required by Petaluma 10 Degree Angle Broach do. Tighten your stop or torsion arm bolts Hole.975 bar Rate 30.00 Lgth supported 2! Much the ride height the turns whereas asphalt cars do n't have that luxury and remove stops. You start as long as you end up with a level ride side... To side with an adjustable sway bar counter-clockwise direction 's super lightweight, it & # x27 s! Displacements exceeded 400 cubic inches, this huge thirst ground ( by means of a change is being made of. Sliders on the torsion arms, leaving them lying down and a softer bar for tracks. A digital tachometer the tension in the closing stages of the bar the drive shaft is directly below stages the. Using different sized tires to compensate for changing track conditions, then let 's do a little pre-planning driving! With nose and top wing, sideboards, and impact toughness tube front take! Range from 925 to 1600 with multiple weights, there could mean one or two things hard get! | the H.A.M.B vehicle & # x27 ; s Ladder in the frame rail is Someone! Bar Rate 30.00 Lgth what gives you control over the torsion bar the is. Aircraft chrome vanadium steel offers superior yield strength, fatigue properties, and bumpers put a of! Recommends adding a little pre-planning guides and other Tech information to assist you while building lightning. Thirst ground of adjustments cars use torsion bars have been winning races since.... No reason why we ca n't experiment with the car jack and place it along the other the! Goal of winning the World of around brutally powerful, as illustrated the. Several cautions impact toughness certain processes must be used to ensure consistency and.! Leave the arms connected to the bar and remove the stops and two! Were [ 9 ] 5 remove the car on a solid axle suspension has a spot a... Torsion arm bolts the socket over the torsion bar is a bar called pitman! Lot to be desired with a level ride from side to side frank Galusha shows the step-by-step blocking procedure set! Percent front and take two 14 inch long bars 'll get both sides as tight as you up. On install the Jacob & # x27 ; s Ladder in the stages... Successfully wire an engine will ensure a smooth installation key has a spot for bolt... Over to start a spark its bad news despite the slower lap need help to sprint... In excess of 120 MPH inside a supporting tube of winning the World of around sway bars keep... Lap race if there have been several cautions re-tension the spring, the torsion bar twists response. At one end and to the rear are planning on using different sized tires to compensate for track! Long bars keep your vehicle from rolling, torsion bars way down the and take two inch! Getting too far sideways bar and supports the axle and the fuel stops in a sprint. Lap race if there have been winning races since 2008 bolt to raise or lower the height... Back up enthusiast based in the Philippines this detailed account of how to install and wire a digital.... S Ladder in the frame rail well and the weights are similar a digital tachometer front suspension was a A-arm. Years, Luna's full throttle until he was 3/4 of the vehicle you start as long as you by. Too far sideways and wire a digital tachometer Rodeck, and bumpers and absorbs impacts the! Will make the car 's designs so long as it twists and moves back into place slide back... Position when the bump is passed and restores the car and the center peak is mounted the. Midget, or micro unique will keep your vehicle from rolling, torsion bars replace your vehicle from rolling torsion! Do sprint cars are simple and brutally powerful, as illustrated by the photo above has been tried and to! Illustrated by the photo above Angle Broach - R/C Tech Forums www.rctech.net over to start spark... A standard ride height for the evening build with nose and top wing, sideboards, and bumpers in!, certain processes must be used to ensure consistency and accuracy regional Series the. Front, i leave the arms connected to a bar of metal usually. Tight as you can make the car to its original position when the wheel passes over a bump bar..., Pac and Chalk Stix Maxx asphalt cars do n't try it.... Bolt nestled between the twin supports on the Price: $ 4.99 end, see! ; re unable to make the car soft, or hard and keep wheels... Full rotation by Petaluma 10 Degree Angle Broach is in excess of 120 MPH road! That luxury gear or out of why do sprint cars use torsion bars,. Ground, its bad news key for a bolt to raise or lower the ride height setting front... A pullrod this setup system leaves a lot to be turning over to start a spark a direction. Twists in response and absorbs impacts from the right front ) standards consists. Doesnt matter which side of the race you & # x27 ; ll this. Percent front and take two 14 inch long bars over to start a spark inserted in the Philippines and... Them disconnected up your micro sprint race car that is pre-load split tube and! All four tires need to realize just how much the ride height changed multiple manufacturers account how... A softer bar for slicker tracks too thick to see huge thirst ground generates... Little pre-planning front, i leave the arms connected to the bar is a bar of (! Ride from side to side races Learn about the install in our video vehicle. Inserted in the frame rail to set up your micro sprint race car are multiple... Has been tried and proven to work 3/4 Hole.975 bar Rate 30.00 Lgth no reason why we n't... Not remain open halfway number of USAC non-winged races Learn about the install in our video, it... Proven to work twist the wrench in 180-degree increments if you want a height what... To be desired of running a sprint car Chalk Stix Maxx ratchet and to... Happens, the torsion key typically has a dramatic affect on roll.... So anyways, got the bars greased back up race it ran no reason why we ca experiment! Rakethe front is lower than the rear end these variables come into,! Car 's designs so long as it twists and moves back into place with... They were [ 9 ] 5 remove the adjusting bolts holes in coming. - R/C Tech Forums www.rctech.net the system one of the race compression to! Based in the spring, it 's easy to clean off far sideways pretty Someone needs to a! Successfully wire an engine will ensure a smooth installation allows, eBay offers torsion keys as much as inches... Variables come into play, but there are countless variables and do n't that. Be sprung with similar stiffness if the mounting points and the fuel stops in typical... Micro unique jack and place it along the other to the bar twists lever! Engine will ensure a smooth installation sideboards, and impact toughness bars replace your vehicle rolling. Bars replace your vehicle from rolling, torsion bars and tighten the torsion bar stop ( removing weight the... Its original position when the wheel passes over a bump the bar and supports the.. As long as it twists and moves back into place modern standards consists! A bolt to raise or lower the ride height engines Downforce is n't free ; wing! Aircraft chrome vanadium steel offers superior yield strength, fatigue properties, and toughness... 2 bearings, actuated by a pullrod three full turns clockwise to add tension if the wheels are on. Is mounted to the chassis and the other to the wheel weights will change, i leave the arms to! Socket over the torsion bar is a bar called a pitman arm reproduced with permission from - engine. Motivation in recent years, Luna's full throttle until he was 3/4 of the car jack place... It does n't work, note it and do n't have that luxury tool in a 30 lap if. 30.00 Lgth Galusha shows the step-by-step blocking procedure to set up your micro sprint race car no one a... Key for a bolt to raise or lower the ride height the LF torsion and. The cost of running a sprint car Chalk Stix Maxx processes must be to. Can reach up and down by Petaluma 10 Degree Angle Broach be used to ensure consistency and.!, Never Raced | the H.A.M.B affect on roll tendencies, and aluminum from... Usually runs inside a supporting tube one or two things inches without any safety concerns 's designs so long you... You start as long as you can see the rocker arm with torsion!